Lahan sits on Nepal’s Terai plains, a flat lowland strip bordering India where the summer monsoon from June through September brings the vast majority of the year’s rainfall.
In Siraha district’s Terai, the town’s rivers respond to the same monsoon rainfall pattern that affects the wider eastern Terai. Because the Terai’s rivers flow south into India’s Bihar and Uttar Pradesh states, a wet monsoon here contributes directly to flooding on both sides of the border, and Nepal’s Department of Hydrology and Meteorology uses radar alongside river gauges to track both local rainfall and the rivers’ cross-border flow. Learn more: Flash Flood Warning Signs on Radar · Open the full Rain Map
Frequently Asked Questions
Is it raining in Lahan right now?
The live radar map above shows precipitation over Lahan, Madhesh Province in real time. Blue shades indicate light rain, while yellow, orange, and red mark heavier downpours. If no colored echoes appear over Lahan, no significant rain is currently being detected.
How often does the Lahan rain radar update?
The radar refreshes continuously, typically every few minutes, so the map reflects current conditions rather than an hours-old forecast. Press play to animate the most recent frames.
Can I see if a storm is heading toward Lahan?
Yes. Press play on the radar to animate the last few hours of rainfall and watch which way rain cells over Madhesh Province are moving – the clearest way to judge whether a shower will reach Lahan or pass by.
Is this Lahan rain radar free to use?
Yes, completely free – no account, app download, or sign-up required. It works in any browser on desktop and mobile.